A5005049630- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Radiation Detection and Scintillator Technologies
- Inorganic Fluorides and Related Compounds
- Luminescence and Fluorescent Materials
- Solid State Laser Technologies
- Quantum Dots Synthesis And Properties
- Gas Sensing Nanomaterials and Sensors
- Microwave Dielectric Ceramics Synthesis
- Advanced Photocatalysis Techniques
- Electronic and Structural Properties of Oxides
- Lanthanide and Transition Metal Complexes
- Photonic Crystals and Applications
- Iron oxide chemistry and applications
- Magnetic Properties and Synthesis of Ferrites
- Ferroelectric and Piezoelectric Materials
- Glass properties and applications
- Innovative concrete reinforcement materials
- Microwave-Assisted Synthesis and Applications
- Chemical Looping and Thermochemical Processes
- Layered Double Hydroxides Synthesis and Applications
- Advancements in Battery Materials
- Rare-earth and actinide compounds
- Catalysts for Methane Reforming
- ZnO doping and properties
Nanjing University of Information Science and Technology
2023-2024
Jiangxi University of Science and Technology
2015-2021
Institute of Molecular Functional Materials
2021
Ganzhou People's Hospital
2016-2020
Xiamen Institute of Rare-earth Materials
2020
University of California, Riverside
2011-2015
Sun Yat-sen University
2008-2015
State Key Laboratory of Optoelectronic Materials and Technology
2008-2015
Riverside
2015
University of St Andrews
2010
A new generation of red phosphors complex fluoride matrices activated with Mn4+ has gained a broad interest in getting high color quality and low temperature solid-state white light-emitting diodes (WLEDs). However, besides their instability toward moisture, the extremely irregular nonuniform morphologies these have limited practical industry applications. In present study, novel type K3ScF6:Mn4+ phosphor highly regular, uniform, purity was obtained successfully through facile...
The crystal growth of CaTiO3 hollow crystals with different microstructures has been investigated. In a water-free poly(ethylene glycol) 200 (PEG-200) solution, nanocubes formed first. underwent an oriented self-assembly into spherical particles, enhanced by the surface-adsorbed polymer molecules. Since and their aggregation took place simultaneously, in outer shells were larger than those cores. Disappearance small cores spheres during Ostwald ripening process led to crystals. Addition...
Abstract The growth of mesoporous quasi‐single‐crystalline Co 3 O 4 nanobelts by topotactic chemical transformation from α ‐Co(OH) 2 is realized. During the process, primary nanobelt frameworks can be preserved. phases, crystal structures, morphologies, and behavior both precursory resultant products are characterized powder X‐ray diffraction (XRD), electron microscopy—scanning (SEM) transmission (TEM) microscopy, selected area (SAED). Detailed investigation formation mechanism porous...
A novel Mn<sup>4+</sup>-doped double-perovskite red phosphor K<sub>2</sub>NaScF<sub>6</sub>:Mn<sup>4+</sup> with ultra-high synthetic yield and uniform spherical morphology was developed for ultra-wide color gamut LCDs.
Upconversion (UC) fluorescence in NaYF4:Yb, Er nanoparticles amplified by metal nanostructures was compared two nanostructure geometries: gold nanoshells surrounding and silver adjacent to the nanoparticles, both placed on a dielectric silica surface. Enhanced UC luminescence signals modified lifetimes induced these metals were observed our study. The intensities of green red emissions enhanced Ag factor approximately 4.4 3.5, respectively. corresponding reduced ∼ 1.7-fold 2.4-fold. In...
Mutual sensitized luminescence of Mn<sup>4+</sup>–Er<sup>3+</sup>are realized<italic>via</italic>different excitation in Gd<sub>2</sub>ZnTiO<sub>6</sub>:Mn<sup>4+</sup>/Er<sup>3+</sup>phosphors. The upconversion from Er<sup>3+</sup>to Mn<sup>4+</sup>is first observed under 980 nm excitation. downshift Mn<sup>4+</sup>to Er<sup>3+</sup>is 335 nm.
Monodispersed β-NaYF4 spindlelike mesocrystals have been successfully synthesized directly from Y(OH)xF3–x as a precursor via facile route. Detailed structural analyses demonstrated that the crystal framework structures of and were identical. A possible mechanism based on in situ ion-exchange transformation has proposed. The monodispersed can be obtained through carefully controlled synthesis precursor. photoluminescence properties doped with various rare earth ions (such Yb/Er, Yb/Tm, Pr,...
We report a universal strategy consisting of <italic>I</italic><sub>1</sub>/<italic>I</italic><sub>2</sub> and <italic>I</italic><sub>2</sub>/<italic>I</italic><sub>1</sub> parts to enhance the <italic>S</italic><sub>A</sub> for temperature sensing applications.
Abstract CO 2 hydrogenation is the most efficient way to achieve goal of “Carbon Neutral,” and transition metals (Mn, Co, Ni, Cu)‐embedded faveolate ZnFe O 4 were fabricated then evaluated with a test. The systematic investigation effect introduced on catalytic performance revealed that activity was influenced by surface structure, especially Fe−C percentages. introduction Zn could increase adsorption, thus promoting reverse water gas shift (RWGS) reaction, which considered first step during...
Abstract A variety of hexagonal sodium yttrium fluoride (NYF) crystals with tunable shapes have been grown, and their up‐conversion (UC) emission has greatly improved after post‐treatment in an aqueous solution NH 4 HF 2 NaF. The enhancement attributed to topotactic ion insertion cations into the channels Na 3 x Y 2– F 6 . As sodium‐ion continues occur content rises, intensity green‐to‐red ratio increase up saturation level. However, X‐ray diffraction patterns SEM images suggest that both...
We report a "ligand stripping" method for the creation of secondary structures colloidal nanocrystals. Using iron oxide as an example, we demonstrate that use diols "stripping agents" allows controllable removal original capping ligands and induces aggregation nanocrystals into well-defined clusters.
Double-sided comb-like ZnO nanoferns have been successfully synthesized via a one-step hydrothermal synthesis without using any catalysts or templates. Their structure and morphology were characterized by scanning electron microscopy, transmission Fourier fast transformation technique. A possible growth mechanism is proposed that the nanobranches are grown epitaxially from both (0001) side surfaces of primarily formed backbone nanobelt. Photoluminescence photocatalysis properties...
Growing crystals with selected structure and preferred orientations on seed substrates is crucial for a wide variety of applications. Although epitaxial or textured film growth polymorph whose resembles the crystal well-known, growing oriented nanocrystal arrays more than one polymorph, selectable at time, from same has not been realized. Here, we demonstrate first time exclusive two titania polymorphs titanate by chemically activating respective polymorph-mimicking crystallographic facets...
In this work, a series of Ce3+ ions activated K2CaP2O7 phosphors were prepared through solid-state reaction method. The luminescence spectra in the ultraviolet-visible range as well decay curves studied. enter one Ca2+ site host, two emission bands are at 347 nm and 369 nm. five 4f–5d excitation centroid shift determined low temperature. critical energy transfer distance thermal quenching properties also discussed.
Tungsten trioxide (WO<sub>3</sub>) spheres decorated with nitrogen-doped graphene (NRGO–WO<sub>3</sub>) were synthesized by applying the spray-drying procedure and characterized for their ability to serve as an electro-catalyst support formic acid electro-oxidation.
This paper introduces a method of improving the performance reinforced concrete blocks and reveals reinforcing effect fibers. It is pointed out that plant fibers treated by styrene-acrylic emulsion can effectively improve interfacial bonding conditions, for modified straw which were alkali processing acrylic coating, their has been significantly improved, conducive to absorbing energy strength material. focuses on introducing three types blocks, it’s known bridging prevent development micro...